tecpantli (T1871:1)
This notation that is also a simplex glyph stands for twenty (tecpantli) or (cempohualli). It shows a red flag. It is part of a measurement of an agricultural parcel. The flag is on a post, with the fabric or paper flying to the viewer's right.
Stephanie Wood
The more abbreviated term pantli can refer to an agricultural furrow, and furrows were counted and expressed almost as a type of measurement for an agricultural parcel. Flags representing a count of twenty or a group of furrows were possibly originally perfect rectangles in shape, but this one may show some European influence, with the curve indenting the right margin--almost a burgee or guidon in the Western tradition, yet still retaining something of the vertical pre-Columbian banner shape. Some flag shapes and their names can be found here.
Stephanie Wood
1558
Stephanie Wood
numbers, números, banderas, flags, twenty, 20, veinte, cempohualli
tecpan(tli), twenty, https://nahuatl.wired-humanities.org/content/tecpantli
veinte
Stephanie Wood
Single-page codex, Archivo General de la Nación, México, Ramo de Tierras, vol. 1871, exp. 1, fol. 28r.
The Archivo General de la Nación (AGN), México, holds the original manuscript. This image is published here under a Creative Commons license, asking that you cite the AGN and this Visual Lexicon of Aztec Hieroglyphs.